Queue logs on successfully but than gets the busy tone

I setup the queue and logged into the queue. System announce that you are logged on successfully but than will gets the busy tone and drop the connection to the queue. Please help
Executing [2100*@from-internal:1] Macro("SIP/100-b76004a0", "agent-add|2100|12345") in new stack
-- Executing [s@macro-agent-add:1] Wait("SIP/100-b76004a0", "1") in new stack
-- Executing [s@macro-agent-add:2] Macro("SIP/100-b76004a0", "user-callerid|SKIPTTL") in new stack
-- Executing [s@macro-user-callerid:1] NoOp("SIP/100-b76004a0", "user-callerid: device 100") in new stack
-- Executing [s@macro-user-callerid:2] Set("SIP/100-b76004a0", "AMPUSER=100") in new stack
-- Executing [s@macro-user-callerid:3] GotoIf("SIP/100-b76004a0", "0?report") in new stack
-- Executing [s@macro-user-callerid:4] ExecIf("SIP/100-b76004a0", "1|Set|REALCALLERIDNUM=100") in new stack
-- Executing [s@macro-user-callerid:5] NoOp("SIP/100-b76004a0", "REALCALLERIDNUM is 100") in new stack
-- Executing [s@macro-user-callerid:6] Set("SIP/100-b76004a0", "AMPUSER=100") in new stack
-- Executing [s@macro-user-callerid:7] Set("SIP/100-b76004a0", "AMPUSERCIDNAME=Reception") in new stack
-- Executing [s@macro-user-callerid:8] GotoIf("SIP/100-b76004a0", "0?report") in new stack
-- Executing [s@macro-user-callerid:9] Set("SIP/100-b76004a0", "AMPUSERCID=100") in new stack
-- Executing [s@macro-user-callerid:10] Set("SIP/100-b76004a0", "CALLERID(all)="Reception" ") in new stack
-- Executing [s@macro-user-callerid:11] Set("SIP/100-b76004a0", "REALCALLERIDNUM=100") in new stack
-- Executing [s@macro-user-callerid:12] ExecIf("SIP/100-b76004a0", "0|Set|CHANNEL(language)=") in new stack
-- Executing [s@macro-user-callerid:13] NoOp("SIP/100-b76004a0", "TTL: ARG1: SKIPTTL") in new stack
-- Executing [s@macro-user-callerid:14] GotoIf("SIP/100-b76004a0", "1?continue") in new stack
-- Goto (macro-user-callerid,s,23)
-- Executing [s@macro-user-callerid:23] NoOp("SIP/100-b76004a0", "Using CallerID "Reception" ") in new stack
-- Executing [s@macro-agent-add:3] Read("SIP/100-b76004a0", "CALLBACKNUM|agent-user||||") in new stack
-- Playing 'agent-user' (language 'en')
-- User entered '100'
-- Executing [s@macro-agent-add:4] GotoIf("SIP/100-b76004a0", "1?a7") in new stack
-- Goto (macro-agent-add,s,8)
-- Executing [s@macro-agent-add:8] GotoIf("SIP/100-b76004a0", "0?invalid") in new stack
-- Executing [s@macro-agent-add:9] ExecIf("SIP/100-b76004a0", "1|Authenticate|12345") in new stack
-- Playing 'agent-pass' (language 'en')
-- Playing 'auth-thankyou' (language 'en')
-- Executing [s@macro-agent-add:10] AddQueueMember("SIP/100-b76004a0", "2100|Local/100@from-internal/n") in new stack
-- Executing [s@macro-agent-add:11] UserEvent("SIP/100-b76004a0", "Agentlogin|Agent: 100") in new stack
-- Executing [s@macro-agent-add:12] Wait("SIP/100-b76004a0", "1") in new stack
-- Executing [s@macro-agent-add:13] Playback("SIP/100-b76004a0", "agent-loginok&with&extension") in new stack
-- Playing 'agent-loginok' (language 'en')
-- Playing 'with' (language 'en')
-- Playing 'extension' (language 'en')
-- Executing [s@macro-agent-add:14] SayDigits("SIP/100-b76004a0", "100") in new stack
-- Playing 'digits/1' (language 'en')
-- Playing 'digits/0' (language 'en')
-- Playing 'digits/0' (language 'en')
-- Executing [s@macro-agent-add:15] Hangup("SIP/100-b76004a0", "") in new stack
== Spawn extension (macro-agent-add, s, 15) exited non-zero on 'SIP/100-b76004a0' in macro 'agent-add'
== Spawn extension (macro-agent-add, s, 15) exited non-zero on 'SIP/100-b76004a0'